Diagnosis and Procedure Coding Resources (2024)

Diagnoses

ICD diagnosis codes are present in all Medicare claim-level and stay-level files: Inpatient, Outpatient, Carrier, Skilled Nursing Facility, Hospice, Home Health, Durable Medical Equipment, and MedPAR. Starting in 2011, institutional providers are able to enter up to 25 diagnosis codes for a single claim where previously only 10 were allowed. Non-institutional providers are permitted 12 diagnosis codes where previously only 8 were allowed. The first code listed is considered the primary diagnosis code. In addition, the non-institutional claims include an ICD diagnosis code on each line item being billed.

Procedures

ICD procedure code fields are present in the institutional claim-level and stay-level files: MedPAR, Inpatient, SNF, and Outpatient. However, ICD procedure codes are not the basis for payment for all of these types of care. In general, when they are not the basis for payment, the fields will be present, but empty.

ICD-9 Diagnosis and Procedure Codes

ICD-9 (International Classification of Diseases, 9th edition) codes were used through September 30, 2015. Fiscal Year 2006-2015ICD-9 codelists are available for download on the CMS website. This list contains less detail than a purchased version.

ICD-10 Diagnosis and Procedure Codes

On October 1, 2015, CMS transitioned from ICD-9 to ICD-10. The claims files include fields that indicate whether the listed ICD code is ICD-9 or ICD-10.ICD-10 codesfor Fiscal Year 2014 through the current fiscal year are available for download on the CMS website.

For information related to managing the transition when conducting analyses, please see the document "Managing the Transition from ICD-9 to ICD-10" in the Attachments section below.

Diagnosis and Procedure Coding Resources (2024)

FAQs

What are the 5 main steps for diagnostic coding? ›

A Five-Step Process
  • Step 1: Search the Alphabetical Index for a diagnostic term. ...
  • Step 2: Check the Tabular List. ...
  • Step 3: Read the code's instructions. ...
  • Step 4: If it is an injury or trauma, add a seventh character. ...
  • Step 5: If glaucoma, you may need to add a seventh character.

Which coding resource would be used to locate a diagnosis code? ›

The National Center for Health Statistics ICD-10-CM Browser tool is here https://icd10cmtool.cdc.gov/ This user-friendly web-based query application allows users to search for codes from the International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) and provides instructional information ...

What are the sources used for procedural coding? ›

Medical records used for procedural coding can include any or all of the following: encounter form, history and physical report (H&P), progress notes, discharge summary, operative report, pathology report, anesthesia record, and/or radiology report.

What are the coding systems used for Diseases diagnoses and procedures? ›

ICD-10 Clinical Modification (ICD-10-CM): Used by all providers in every healthcare setting; codes for diagnoses; developed and maintained by the Centers for Disease Control & Prevention (CDC), National Center for Health Statistics (NCHS).

What are the 7 steps to accurate coding? ›

Seven Steps to Correct Surgical Coding
  • Review the header of the report.
  • Obtain prior authorization before surgery (If necessary)
  • Review the documentation.
  • Review the CPT code book and make preliminary code selection.
  • Review policies and eliminate the extras.
  • Append modifier(s)
  • Double-check your codes.

Which books would you use to look up procedural codes? ›

CPT® Books & Products

Current Procedural Terminology (CPT®) code books are an integral resource for medical coders and coding students in the U.S. CPT codes offer health care professionals a uniform language for coding medical services, which streamlines reporting and increases accuracy and efficiency.

What are the examples of procedural coding? ›

What is an example of a procedure code? Let's consider an example of a medical procedure code for insurance: CPT code 99213. This code represents an Evaluation and Management (E&M) service provided by a physician or qualified healthcare professional.

What are the six steps in the procedural coding process? ›

6 Key Steps in the Medical Coding Process
  • Action 1. Abstract the documentation. ...
  • Action 2. Query, if necessary. ...
  • Action 3. Code the diagnosis or diagnoses.
  • Action 4. Code the procedure or procedures. ...
  • Action 5. Confirm medical necessity. ...
  • Action 6. Double-check your codes.
Dec 4, 2019

What type of coding is used for diagnosis? ›

1. International classification of diseases (ICD) These are diagnostic codes that provide a standardized way of describing the causes of injury, illness, and death. This code was established in the 1940s and comes from the World Health Organization (WHO).

What is the standard use for diagnosis coding? ›

ICD-10-CM is used for medical claim reporting in all healthcare settings and is a standardized classification system of diagnosis codes that represent conditions and diseases, related health problems, abnormal findings, signs and symptoms, injuries, external causes of injuries and diseases, and social circ*mstances.

What is the diagnosis coding method? ›

Diagnostic coding is the translation of written descriptions of diseases, illnesses and injuries into codes from a particular classification. In medical classification, diagnosis codes are used as part of the clinical coding process alongside intervention codes.

What is Action 5 of the coding process? ›

Action 5.

Aligning the diagnosis codes with the procedure codes to ensure medical necessity is being evidenced is the next action that must be performed by professional medical coders.

What are the basic steps in the diagnostic process? ›

The steps of the diagnostic process fall into three broad categories: Initial Diagnostic Assessment – Patient history, physical exam, evaluation of the patient's chief complaint and symptoms, forming a differential diagnosis, and ordering of diagnostic tests.

What is the 5th step to accurate coding? ›

5 Learn from others. A fifth strategy to ensure accurate coding and documentation is to learn from others who have more experience or expertise in coding and documentation.

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